[ncl-talk] NCL giving empty pdf plots

Ronald Opio opioronald123 at gmail.com
Wed Oct 18 04:55:25 MDT 2017


Hello Mary.

I found the problem and fixed it.

Turns out that when I use a history interval of 720 in the WRF input
namelist, that's when I get that problem. So I changed it back to the
default 180, and it runs and plots just fine.

Thank you for the response though.

Ronald.

On Tue, Oct 17, 2017 at 11:52 PM, Mary Haley <haley at ucar.edu> wrote:

> Hi Ronald,
>
> There could be many reasons for the lack of a plot:
>
>    - Your script is exiting with an error before it even gets to the part
>    that draw the graphics.
>    - You set res at gsnDraw and res at gsnFrame to False, but then didn't call
>    "draw" and "frame" yourself
>    - Your data is constant or all missing
>    - Your data has NaNs (not-a-number)
>    - Your lat/lon values are not in the same range as the area of the map
>    you are trying to plot over.
>
>
> We don't have enough information.
>
>    - Did you get any error messages?
>    - What exactly do you mean by an "empty" PDF?  Do you mean a PDF that
>    was 0 bytes in size?  Or, did you get a partial plot but without any data?
>    - What was different about the experiments that you ran today,
>    compared to when they worked before?
>
> If you are still not sure why there's no plot, can you provide us with the
> script and data so we can run it here? You can use our ftp site, and you
> can email me offline if you don't want to share this publicly:
>
> http://www.ncl.ucar.edu/ftp_files.shtml
>
> Thanks,
>
> --Mary
>
>
>
>
> On Tue, Oct 17, 2017 at 8:40 AM, Ronald Opio <opioronald123 at gmail.com>
> wrote:
>
>> Hello colleagues.
>>
>> I have been using ncl to plot my wrf output files and it has been working
>> great. However, I have run some experiments today, and tried plotting them
>> but ncl only generates empty pdfs.
>>
>> When I use my earlier generated files, ncl plots them well.
>>
>> What could be the problem?
>>
>> Ronald.
>>
>> --
>> ------------------------------------------------------------
>> ----------------------------------------------------
>>
>> *Ronald Opio - Meteorologist | Environment Scientist | Auto Enthusiast*
>>
>>
>> **** **How the World looks, depends on where you are standing ****
>>
>>
>>
>> _______________________________________________
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>


-- 
----------------------------------------------------------------------------------------------------------------

*Ronald Opio - Meteorologist | Environment Scientist | Auto Enthusiast*


**** **How the World looks, depends on where you are standing ****
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